Gemstone



FIG. 1 is top view;

FIG. 2 is a first side view;

FIG. 3 is a bottom view;

FIG. 4 is a second side view;

FIG. 5 is a first end view;

FIG. 6 is a second end view;

FIG. 7 is an upper perspective view; and,

FIG. 8 is a lower perspective view thereof. 

The ornamental design for a gemstone, as shown. 